William K. Vanderbilt Costume Ball [Album cover.]

Mrs. William K. Vanderbilt (neé Alva Erskine Smith)

Mr. William Jay

Mr. William Douglas

Mr. [William Bayard] Cutting

Mrs. William Douglas (neé Adelaide Townsend)

Mr. H. Duncan Wood

Lady Mandeville (neé Consuelo Yznaga)

Mr. Thorne

Mrs. Peters[?]

Miss May Bird

Mrs. Sam Penniman (neé Mary Knower)

Mr. Allen Thorndike Rice

Mr. Pierre Mari [Peter Marie.]

Miss Amy Townsend

Miss [Frederica] Belmont (later Mrs. S. S. Howland)

Mr. Isaac Bell

[Mrs Arthur Paget (née Mary (Minnie) Paran Stevens).]

Mrs. Henry Leavitt

Mr. Buchanan Winthrop